1 Safety Precautions
The following safety precautions must be observed during all phases of operation, service and
repair of this instrument. By purchasing this equipment the purchaser assumes all liability for the
operation and use of this equipment. The intended use of the instrument, its design and
manufacture, is to be conducted within the precautions or other specific warnings located within
this manual. Failure to comply with these precautions and other specific warnings violates safety
standards of design, manufacture, and intended use. Raytech Switzerland assumes no liability for
the operation and use of this equipment.
SAFE OPERATION
Only qualified knowledgeable persons should be permitted or attempt to operate this test
equipment. All test personnel should fully familiarize themselves with the correct application and
operation of this and all test equipment prior to operation. Persons directly and indirectly engaged
in the operation of this test equipment should keep clear of all high voltage apparatus while
conducting tests and measurements.
WARNING!
Never connect the instrument to an energized transformer!
GROUND THE INSTRUMENT
The power cord supplied with the equipment must be connected an electrical receptacle with an
electrically grounded terminal (Earthed Ground). To minimize shock hazard, the Ground Terminal
on the instrument must be properly connected to an Earth grounded point. In many cases, the
quality of the safety ground terminal provided by the power cord does not fulfil the safety
requirements.
Non grounded instruments are dangerous and may cause Personnel and instrument damage.
BEFORE APPLYING POWER
Read this manual carefully before operating the system. The instruments are line operated
. They
operate from a wide range power input from 90 to 264Vac and 47…63Hz with automatic ranging.
1
The WR14 is battery operated and the WR14-R has a battery operation option. Both systems have safety ground lugs.
Instruction Manual Winding Resistance Meter
Type WR100 / WR50 / WR14
Page 6 of 139
